_dta:
  1.  by Jean Roth , jroth@nber.org , 13 May 2015

  obs:     4,499,589                          
 vars:             2                          13 May 2015 18:41
 size:   215,980,272                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
npi             str10   %10s                  National Provider Identifier
                                                (NPI)
ploccityname    str38   %38s                  Provider Business Practice
                                                Location Address City Name
-------------------------------------------------------------------------------
Sorted by:  npi